Garry investigates the Girandoni air rifle that Meriwether Lewis carried on the expedition, one of the most technologically advanced weapons of its era and a source of fascination among the Native nations encountered along the route. The article describes the rifle’s Austrian military origins, its remarkable capabilities (including a 22-round tubular magazine, near-silent operation, and effective range comparable to powder firearms), and its probable acquisition by Lewis through U.S. Army channels. Garry documents the many occasions when Lewis demonstrated the air gun to Native audiences, noting that the weapon’s seemingly magical ability to fire repeatedly without visible spark, smoke, or loud report made a profound impression. The article evaluates the air gun’s diplomatic significance, arguing that it served as a powerful symbol of American technological capability that enhanced the expedition’s prestige and may have deterred potential attacks.
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